Belt shipper mechanism



Oct. 1, 1940.. w. J. scoTT BEL'I' SHIPPER MEGHANISM 2 Sheets-Sheei l Filed March 22, 1940 INVENTOR.

ATTRNEYS.

Oct. l, 1940.

w. J. scoT'r 2,2l6,215

BELT sHIPPEn MEcHANIsM' Filed March 22, 1940 2 Sheets-Sheet 2 ua, Wi

INVENTOR.

A TTORNEYS.

Patemed od. 1, 1940 w -f i 2316,215

UNITED STATES PATENT OFFICE 2,216,215 BnLT snIPPER MECHANISM Walter J. Scott, Woonsocket', R. I. Application March 22, 1940, Serial No` 325,287

i ciaims. (ci. tir-4242.6)

This invention relates to a belt shpper meehwiring hook-up for the two electromagnets utianism of the type used for automatically shiftlized in this mechanism; i ing a belt for stopping the application of driving Fig. 8 is an enlarged detailed view of the means power to a machine or the like, upon the hapof connecting the Wire of one end of the magnet 5 pening of some fault in the machine by reason of to its terminal; 5

Which work should be suspended until the fault Fg; 9 is an enlarged view of the means' of conis corrected, and is an improvement upon my necting the other end of the wire of the magprior invention set forth inPatent No. 1,937,207, het tO itS termiheidated November 28, 1933. It is found in the utilization of a belt shipper provide a more secure looking arrangementithan l1,9.3'7f,20'7', that it sometimes occurs that vibration thatpreviously provided and shown in the above Of the machine llpOh Whieh it S mOUhted Will patent so that regardless of vibration in the ma- Shake the ie'tehihg meehahiem 100Se tO pefmt chine, the looking device cannot be shaken loose Operateh Of the be1t Shippel' meeh'nism WithOilt eration of means designed specifically for` the orderto prevent this, I have utilized a second stopping of the machine; magnet which holds the armature of the first Another object of the invention is to provide megnet ih DOSitiOh, but Whieh iS S0 Syhehrehized an improved bracket and slide for the engageas to release at the same time thatithe catch l ment of a shipper mechanism. which holds the shipper bar will be released and 20 The invention is accompiished byimeans of a eeeerdingly the be1t Shippel' meehahism W111 be plurality of looks, one looking the other but Caoperated. In order to better perfect this mechpable of substantially simultaneous release for eniem, I have provided a braeket and Slide bar the operation of the Shipper meohanism when for a more accurate movement of the latch which 215` desired. t isreleased, whereby improved results may be ob- The invention also utilizes electric coils for tahed; end the OHOWhg S a mefe detaiied decausing operation of the latches on the looks with SeTp-tieh Of the present embediment Of this inthese ooils so armnged that they may be 0p vention, illustrating the preferred means by erated substantially simuitaneously, which these advantageous results may be accom- 301 In carrying out the invention, the parts are so DiSheCiI arranged that they may drop into position by With reference to the drawings, lo designates gravity or else be urged into a predetermined pogehefeiiy a hfeeket Whieh COnSiStS Of a body D01"- Stion through Springs. tion H with an arm. 12 bracedA as at |3 to the With these and other objects in view, the n body by which the bracket is mounted on some 352 vention consists of certain novel features of consuitable Hprght Support |4 tO DOSitiOn the struction, as W111` be more fully oescribed, and bmeket in adiancy to the shipper bar 15 slidparticularly pointed out in the appended claims. amy mounted through a' suitable hangef '6- The In the accompanyng drawings; shipper bar carries the usual fork H mounted Fig. 1 is a top plan view of the bracket with my upon the bal' through Opening '8 to engage abe1t With driving the machine or which may be shifted to Fg 2 is a sectonal View on line 2 of Fg 1; gulde the be1t onto the loose pulley 20 for ldhng Fig. 3 is a side elevation on a smaller scale i1- of hgal'afnnivwzhl tldbl; from th -1 lustmtng the Shipper bar' the be1t puueys and body and re slotted as at 23 and 24 to slid the electnc Cncult for the Operation of the ably receive member 25 which carries the arm 26 Shlp'per Hieehamefh; w i for engaging an adjustable abutment 21 provided Fig. 4 1s a sectional viewof the latch mech- On the Shipper bar |5 This member 25 is proanism in greater detail` and on a larger scale than video-With a pin 23 to which one end of the spring that shown in Fig. 2; 29 isiattached, while the other end of the spring,

Fig. 5 is a perspective view of a portion of the 30, is anehored to a pin 3| in the portion 22 or latch mechanism; anyother fixed portion of the bracket. When the Fig. 6 is a sectional view taken on substantialmember 25 is moved into position to shift the be1t 1y line 6-6 of Fig. 4; to the tight pulley, the spring 29 is placed under 10 This invention has for one of its objects to mechariism such as shownn my pror patent,N0- 10' 15 and W111 operate only upon the predetermined op.. the electrical energization of the magnet. In 15`` 410i improved mechanism shown associated therewhich may be trained Over the puney '9 for 40 Fig. 7 is a diagrammatic view showing the tension,turging the member 25 to the right as H:

shown in Figs. 1, 2, and 3 and thus tending to move the belt to the loose pulley.

The arm 26 is slotted as at 32 and in this slot a latch 33 is located which itself is slotted as at 34 to receive the member 25 and be guided by the member 25 in its Vertical movement in the slot 32. This latch 33 may be pushed upwardly but will drop by gravity into a position to be engaged in order to hold the member 25 with its spring tensioned as illustrated in Figs. 1 and 2. If the latch is so positioned that gravity will not affect it, a spring will supply this force.

Referring more particularly to Fig. 4, the latch 33 is .engaged by a catch 35 pivoted as at 36 and urged upwardly by a spring 31 which spring is much weaker than the spring 29. This catch 35 has oppositely outwardly extending trunnions 38 which are engaged b-y members 39 pivoted on pin 40 extending therefrom and recessed as at 4| to receive the trunnions 38, the surface of the recess being such that, while the members 39 are in the position illustrated in Figs. 4 and 5, the catch 35 cannot move downwardly and thus will lock with the latch to hold the member 25 in the position illustrated in Figs. 1 and 2. There are two of these members 39, one at either end of the catch 35. The trunnions 38 tend to move generally downwardly about the pivot 36 as a center and tend to swing the members 39 about their pivots 40. These members 39, however, are blocked against swinging about pivot pins 48 by the armature plate 42 pivoted by the pin 43 supported in the side walls of the casing 44. This armature plate is urged upwardly by the plunger 45 responding to the action of spring 46 in bore 41 in the casing 44. Such plate, however, is limited in its upward movement by the fixed pin 48 projecting inwardly from the side of the casing 44. An electromagnet 49 is positioned b-eneath the armature 42 and when energized will pull the armature 42 downwardly.

In order to prevent the armature 42 from being pulled downwardly, an armature 58 is provided extending generally at right angles thereto and pivoted as at 5! in the casing 52. This armature is notched as at 53 to receive the end of the armature 42. A plunger 54 tends to move the armature 56 into the position illustrated in Fig. 4 in response to the action of spring 55 in bore 56 of the casing 52. An electromagnet 51 will move the armature 50 toward it when energized so as to release the armature 42.

Winding of the armature 49 terminates in the wire end which is received and soldered in the bore 5| of a post 62 threaded as at 63 into the casing 44 and having a head 64 engaging the casing so as to provide a ground for this end of the electromagnet. The other end of the wire of the electromagnet is designated generally 65 and extends into a bore 66 of a threaded post 61 to be soldered at the outer end of this post as at 68. This post extends through an insulating bushing 69 threaded into casing 44 which receives on its outer end some suitable terminal connection 10 bound between nuts 1| and 12 threaded onto its exterior surface.

The machine in connection with which this belt shipper is designed to operate will have two contacts which will be held separated when the machine is operated correctly' and which will come together to complete a circuit when some fault in the machine occurs. The terminals 86 and 8| (see Fig. 3) will be connected to the separated contacts of the machine while a transformer 82 may be connected to either' side of a line 83, 84

from a main supply of current. One of the lines to the belt shipper mechanism, 85, will be grounded, as indicated by its attachment to the bracket, while the other line 86 will extend to the live terminal post 61 of each of the electromagnets 29 and 51 (see Figs. 3 and 7). 'I'hus, these electromagnets will be synchronized to operate in unison.

Upon bridging of the contacts connected to terminals 88 and 8|, the Circuit will be energized to cause electromagnet 51 to draw armature 58 toward it and also to move inwardly the plunger 54, thereby releasing the armature 42 which will be drawn downwardly by magnet 49 also moving the plunger 45, thereby releasing the member 39l which will be forced to the left as shown in Fig. 4 about its pivot 40 and catch 55 will be moved downwardly by the pull of the spring 29 on the latch 33 so that this latch will be released by the downward movement of the catch 35, thereby permitting spring 29 to move the member 25 to the right as shown in Fig. 2 and shift the belt in the fork |1 from the tight pulley |9 to the loose pulley 28.

The foregoing description is directed solely towards the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible.

I claim:

1. In a belt shipper mechanism, means for urging the belt shipper in one direction, a latch part and a catch part, one of which parts is carried by said means for controlling movement of said means, electrically Controlled locking means to block the other part from movement, a second electrically controlled locking means to control the movement of the first locking means, and means to synchronize the release of both locking means.

2. In a, belt shipper mechanism, a bracket, a member slidable in the bracket, an arm on the member to engage the beltv shipper bar, a spring for urging the slide member in one direction, a latch movable With said member, a catch to engage said latch and hold the member in a position with the spring tensioned suificiently to move saidmember when the catch is released, means including an armature for locking said catch in latch-engaging position, an electromagnet for operating said armature, a second means including a second armature for holding said first armature in locking position, and a second electromagnet for Operating said second armature.

3. In a belt shipper mechanism, a bracket, a member slidable in the bracket, an arm on the member to engage the belt shipper bar, a spring for urging the slide member in one direction, a latch movable with said member, a catch to engage the latch and hold the member in a position with the spring tensioned sufiiciently to move said member when the catch is released, means including an armature and spring-pressed plunger for locking said catch in latch-engaging position, an electromagnet for Operating said armature, means including a second armature and springpressed plunger for holding said first armature in locking position, and a second electromagnet for Operating said second armature.

4. In a belt shipper mechanism, a bracket, a member slidable in the bracket, an arm on the member to engage the belt shipper bar, a spring for urging the slide member in one direction, a slot in said arm, a latch slidablein said slot and itself slotted to receive and be guided by said member, a catch to engage the latch and hold the member in a position with the spring tensioned sufficiently to move said member When the catch is released, means including an armature and sprng-pressed plunger for looking said catch in latch-engaging position, and an electromagnet for Operating said armature.

5. In a belt shipper mechanism, a bracket, a member slidable in the bracket, an arm on the member to engage the belt shipper bar, a spring `for urging the slide member in one direction, a

slot in said arm, a latch slidable in said slot and itself slotted to receive and b-e guided by said member, a catch to engage said latch and hold the member in a position With the springten-` sioned sufiiciently to move said member when the catch is released, means including an armature for looking said catch in latch-engaging position,

and an electromagnet for Operating said armature.

WALTER J. SCO'I'I'. 

